AA 6486 then AA 3972 at O'Hare
Detroit → Chicago → Bloomington-Normal
Timetable, Chicago time
17:29AA 6486 from Detroit at the gate
12:59AA 3972 to Bloomington-Normal leaves the gate
19 h 30 apart on the timetable, overnight
AA 3972 leaves 19 h 30 after AA 6486 arrives on the timetable: more than half a day, so not a connection we count.